Create validation functions that cache results
$ npm install --save cached-validations
Create a validation schema and then you can create a validation function that takes in values and outputs any errors based on the passed validation functions.
If an error has already been returned for a specific value then it will be cached and returned on the next invocation, making this a relatively performant option for doing things like form validations on keyup.
Note: this module uses the ES6 Map and will require the user to provide a polyfill for unsupported browsers.
import createValidator from 'cached-validations';
const formValidations = {
email: email => {
if (!email) return 'Email is required';
if (isNotEmail(email)) return 'Must be a valid email';
},
age: age => {
if (!age) return 'Age is required';
if (age > 120 || age < 13) return 'Must provide a valid age.'
}
}
const formValidator = createValidator(formValidations);
const dummyInput = {
email: 'notanemail',
age: 44
}
const errors = formValidator(dummyInput)
// {email: 'Must be a valid email'}Takes an object mapping validation functions to keys, returns a function that will validate objects with those same keys and return any errors based on the initially provided validations.
MIT © Brandon Dail